SYSTEMS AND METHODS FOR MEASURING OXYGENATION

摘要

Optoacoustic diagnostic systems, devices, and methods are described. A system may comprise a console unit and a handheld probe. The console unit comprises a controller, a processor, a photodiode array, an acoustic processing subsystem, and a cooling subsystem. The probe directs light signals from the photodiode array to patient tissue. The light signals each have different wavelengths selected based on the physiological parameter of interest. The probe further comprises an acoustic transducer that receives acoustic signals generated in response to the directed light signals. The probe may comprise a finger-held working end that can be directed to the skull of a fetus within the uterus during labor. The probe can then accurately determine blood oxygenation of the fetus to determine if a caesarian section is necessary.

主权项

1. A method for optoacoustically determining oxygenation of a subject, the method comprising:
emitting a first light having a first wavelength to tissue of the subject; emitting a second light having a second wavelength to the tissue, the second wavelength being different from the first wavelength; emitting a third light having a third wavelength to the tissue, the third wavelength being different from the first and second wavelengths; detecting acoustic pressure generated by the tissue in response to the first, second, and third emitted lights; and determining oxygenation in response to the detected acoustic pressure.